The structure and stability of the first generation stars of M. and M. on the zero-age main sequence.

1978
İbrahim, Aysel

Suggestions

The broad-band noise characteristics of selected cataclysmic variables (CVS), anomalous x-ray pulsars (AXPS) and soft gamma repeaters (SGRS)
Külebi, Baybars; Balman, Şölen; Department of Physics (2006)
In this work present the broad-band noise structure in the 2-60 keV data of Cataclysmic Variables (CVs) with Anomalous X-Ray Pulsars (AXPs) and Soft Gamma Repeaters (SGRs). We analyzed Rossi X-ray Timing Explorer (RXTE) PCA data and derived time series from 27 CVs, 4 AXPs and 1 SGR using the RXTE archive. In general, CVs of different types all show broad band noise which can be fitted with power laws, using exponentional cut-offs, and Lorentzians in a similar way to power spectral (noise) characteristics of...
Optimization of a regeneration and transformation system for lentil (lens culinaris M., cv. Sultan-I) cotyledonary petioles and epicotyls
Bayraç, Abdullah Tahir; Öktem, Hüseyin Avni; Department of Biotechnology (2004)
In this study, optimization of a transformation and regeneration system via indirect organogenesis in cotyledonary petiole tissue of lentil (Lens culinaris Medik.) was investigated. Eight different medium types differing in their plant growth regulator compositions were employed to examine the callus induction potency of cotyledonary petiole. Except two, all other tested medium yielded more than 80% callus induction. Nine different medium types were studied to test the potencies of callus structures for sho...
The Galactic distribution velocities luminosities and evolution of pulsars
Gök, Fatma; Alpar, M. Ali; Guseinov, Oktay; Department of Physics (1995)
The re-analysis of the ROSAT data of Nova Mus 1983 using white dwarf atmosphere emission models
Balman, Şölen; Krautter, J (2001-10-01)
The analyses of X-ray emission from classical novae during the outburst stage have shown that the soft X-ray emission below 1 keV, which is thought to originate from the photosphere of the white dwarf, is inconsistent with the simple blackbody model of emission. Thus, ROSAT Position Sensitive Proportional Counter (PSPC) archival data of the classical Nova Mus 1983 (GQ Mus) have been re-analysed in order to understand the spectral development in the X-ray wavelengths during the outburst stage. The X-ray spec...
The broad-band noise characteristics of selected AXPs and SGRs: Probing the magnetar coronae
Kulebi, Baybars; Balman, Şölen (2007-08-17)
We present the broad-band noise structure of Anomalous X-Ray Pulsars (AXPs) and Soft Gamma Repeaters (SGRs) in the 2-60 keV energy band which are thought to be powered by either magnetic decay(Thompson & Duncan 1995) or accretion (Alpar 2001). We have used Rossi X-ray Timing Explorer (R-XTE) PCA archival light curves and derived time series for 4 AXPs and 1 SGR. We detect that AXP and SGR sources show band limited noise at low frequencies in the range 0.005-0.05 Hz. We find that this noise level can be asso...
Citation Formats
A. İbrahim, “The structure and stability of the first generation stars of M. and M. on the zero-age main sequence.,” Ph.D. - Doctoral Program, Middle East Technical University, 1978.